The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2026
Filed:
Dec. 16, 2020
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Hans Goris, Zaventem, BE;
Dries Timmermans, Sint-Katharina-Lombeek, BE;
Stephen Beadle, Prairieville, LA (US);
Thomas Wesselmann, Baton Rouge, LA (US);
Alex Carpenter, Seabrook, TX (US);
Travis Reine, Seabrook, TX (US);
Edwin Kooke, Machelen, BE;
Byron Sevin, St. Francisville, LA (US);
Zsigmond Varga, Schaerbeek, BE;
Bradley Kontra, Huffman, TX (US);
ExxonMobil Chemical Patents Inc., Spring, TX (US);
Abstract
Catalyst preforming rates during hydroformylation may decrease in the presence of carbonates. Carbonate mitigation methods may comprise treating a hydroformylation reaction product with an aqueous carboxylic acid under oxidizing conditions to form a deactivated catalyst aqueous solution having a pH of about 4 or less, reducing the hydroformylation reaction product to form a reduced reaction product, conveying a gas stream through the reduced reaction product to strip carbon dioxide therefrom, contacting caustic aqueous solution with the stripped reduced reaction product to form partially spent caustic aqueous solution, combining at least a portion of the partially spent caustic aqueous solution with the deactivated catalyst aqueous solution to form a combined aqueous mixture sufficiently acidic to decompose carbonate, and extracting a Group 9 transition metal carboxylate from the combined aqueous mixture into an organic phase.